https://www.nps.gov/places/wayside-balcony-boulevard-cinder-cones.htm
Cinder Cones (U.S. National Park Service)
Schonchin Butte is just one of dozens of cinder cones that dot the surface of the Medicine Lake shield volcano. These common features form when a volcanic vent...
cinder conesnational parkuservice
https://www.nps.gov/articles/000/cinder-cones.htm
Cinder Cones (U.S. National Park Service)
cinder conesnational parkuservice